51165063215 has 16 divisors (see below), whose sum is σ = 70241541120. Its totient is φ = 35048459040.

The previous prime is 51165063181. The next prime is 51165063253. The reversal of 51165063215 is 51236056115.

It is not a de Polignac number, because 51165063215 - 2¹⁰ = 51165062191 is a prime.

It is a super-2 number, since 2×51165063215² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718775 + ... + 786744.

It is an arithmetic number, because the mean of its divisors is an integer number (4390096320).

Almost surely, 2^51165063215 is an apocalyptic number.

51165063215 is a deficient number, since it is larger than the sum of its proper divisors (19076477905).

51165063215 is a wasteful number, since it uses less digits than its factorization.

51165063215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506502.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 51165063215 in words is "fifty-one billion, one hundred sixty-five million, sixty-three thousand, two hundred fifteen".